Institutional Repository | Satya Wacana Christian University: Micromagnetic Study of Exchange Interaction Effect on Magnetization Reversal Mode of Cofeal
Micromagnetic Study of Exchange Interaction Effect on
Magnetization Reversal Mode of CoFeAl
Umi Muflihatun Nurul Azizah1,c),SuryasatriyaTrihandaru2, b)and NurAji Wibowo2, a)
1
Department of Physics Education, Faculty of Science and Mathematics, Satya Wacana Christian University,
Salatiga 50711, Central Java, Indonesia
2
Department of Physics, Faculty of Science and Mathematics, Satya Wacana Christian University, Salatiga 50711,
Central Java, Indonesia
a)
[email protected]
[email protected]
c)
[email protected]
b)
Abstract.A magnetization switching dynamics of perpendicular magnetic anisotropy material CoFeAl has been
simulated. This simulation was conducted using Landau-Lifshift Gilbert equation. The used magnetic parameters are
magnetic anisotropy 2.3 × 10 6 erg/cm3, magnetic saturation 10 kG, medium Gilbert damping 0.3 and various exchange
constants in a range of (1.5 – 4.0) × 10-7 erg/cm. CoFeAl is modeled as a parallel-pipe with the dimension is 50×50×20
nm3. As a result, this simulation predicts that the chosen materials exhibit good thermal stability which is greatly affected
by exchange energy. Magnetization reversal mechanism is dominated by domain wall propagation process. Moreover,
the simultaneous distribution of thermal with external magnetic field on the materials reduces the writing field which
reaches the minimum value when exchange constant is 3.5 × 10-7 erg/cm.
Magnetization Reversal Mode of CoFeAl
Umi Muflihatun Nurul Azizah1,c),SuryasatriyaTrihandaru2, b)and NurAji Wibowo2, a)
1
Department of Physics Education, Faculty of Science and Mathematics, Satya Wacana Christian University,
Salatiga 50711, Central Java, Indonesia
2
Department of Physics, Faculty of Science and Mathematics, Satya Wacana Christian University, Salatiga 50711,
Central Java, Indonesia
a)
[email protected]
[email protected]
c)
[email protected]
b)
Abstract.A magnetization switching dynamics of perpendicular magnetic anisotropy material CoFeAl has been
simulated. This simulation was conducted using Landau-Lifshift Gilbert equation. The used magnetic parameters are
magnetic anisotropy 2.3 × 10 6 erg/cm3, magnetic saturation 10 kG, medium Gilbert damping 0.3 and various exchange
constants in a range of (1.5 – 4.0) × 10-7 erg/cm. CoFeAl is modeled as a parallel-pipe with the dimension is 50×50×20
nm3. As a result, this simulation predicts that the chosen materials exhibit good thermal stability which is greatly affected
by exchange energy. Magnetization reversal mechanism is dominated by domain wall propagation process. Moreover,
the simultaneous distribution of thermal with external magnetic field on the materials reduces the writing field which
reaches the minimum value when exchange constant is 3.5 × 10-7 erg/cm.